A Block Cipher Generation Using Color Substitution

Executive Summary

The most influential and universal approach to countering the threats to network/information security is encryption. Even though it is very authoritative, the cryptanalysts are very intelligent and they were working day and night to break the ciphers. To make a stronger cipher it is recommended that to use: more stronger and complicated encryption algorithms, Keys with more number of bits (Longer keys), larger block size as input to process, use authentication and confidentiality and secure transmission of keys. It is certain that, if, the authors follow all the mentioned principles, can make a very stronger cipher.